Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a0451ba799bc9b…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 08:29:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1932942545639bf108969f163145d334 SHA-1: 1f81d4fe36b3a8906002d9f147f2435c0ba86ea5 SHA-256: 92a0451ba799bc9ba033bdad367e013497987a5fe290dd7e8a0227d9394aad77
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as game hacks and free spin generators. The document body, though partially corrupted, contains a prominent URL that is likely intended to lead the user to a malicious download or exploit. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/406889139/free-spins-for-coin-master-that-work-game-hack In PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-roblox-face-mask_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005496.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5496 25448 bytes
SHA-256: 2ba565c1858d89d5530d5a541a9bed1fca277e741b2ddb6f9a866c9c4d650b24
font_01_sfnt_off00008e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2D 18420 bytes
SHA-256: 38941df2f255dbbeb7e8f4cd39caefbe857da85da1c5ae5f328b1c0cb4bd120e

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